Toothbrush



R. R. MYERS TOOTHBRUSH April 8, 1930.

Filed Nov. 19, 1927 MNM INVENTO /FaeT/i. M S

fa/u/ASMMQ,

ATTORN EYS Patented pr. 8, 1930 UNITED STATES f rarEN'r OFFICE i ROBERT R. MYERS, OE LAS vEGAs, NEVADA, AssrGNoRTo onEAN-BE-TWEENTOOTH BRUSH COMPANY, OE s'r. LOUIS, M1ssoURr,A CORPORATION OEDELAWARE TOOTHBRUSH Application filed November 19, 1927,. Serial No. 234,457, and in Germany November 22, 1926. i

This invention relates to improvements in tooth brushes, and especially to a separable handle or holderl for tooth brushes havingv adjustable and replaceable brushfheads.

Thesubject matter of the present application constitutes a continuation in part o that originally included in my copending application, Serial No. 49,762', led August l2, 1925. An object of this invention is to provide a clamping device for the adjustable retcn' tion of a brush head, and which will permit the brush head to be readily moved'to any,

A further object is to provide a brush hold- V er which will permit of the easy attachment or removal of a separate brush head, so that l the latter may be easily renewed.

A further obj ect is to provide a handle, for' the Vdescribed purpose, with an enshrouded clamping device for a brush head, so that the exterior surface ofthe assembly will be smooth, free from projections, and avoid in-- to the oral cavity and gums, when em-A ivry ployed with a tooth brush.

Further objectsl and advantages of the in- Y vention will appear from the drawing andAv vslot the clamping device hasa pair of op- It will be understood that the described the following detailed description.

clamping device and handle, maybe varied substantially as to the proportion and disposition of their various parts; that the` clamping device may be slightly modified in. form and thereby adapted for use with'a brush head of a modified form;r that if preferred the handle proper and portions of the*` clamping device may be integrally formed, instead of being constructed ofV differentl parts; that the foregoing and other changes may be made in the described example, theYV same being merely a single executional em- Fig. 2 is a plan view of the handle; and Figs.

3 and 1- are enlarged fragmentary views of the brush end of the handle,.certain parts being shown in section.

With particular reference to the drawings, 5 indicates the brush handle, proper, which is substantially flat-and curved at4 its outer end tovconform to the hand of the user. The

lhandle may be constructed of anydesired `material having the requisite strength. Se-

YF rom this point the metal member 6 is1 eX- tended VVtoyform an outer end 8, which is preferably of tubular form and elliptical-in cross section. The metal member 6 terminates-in a :flared kportion 9, at the eXtreme outer end of the member 6, and of the brush handle.

Mounted partially within the tubular yportion 8 is a clamping device.10,whichpreferably consists of a flat metal member provided with a' circular head 1 1, having a l circular opening 12, anda slot 13,. formed therein.

`The opening 12 is adapted to receive the brush head in a manner which will be hereinafter more fully described. By reason of the positely disposed members '14 and 15 which taper inwardly from the outer end portion vto the rear portionof the member`8, into a pair of spring clamping varn'us y16 and 17.- 'By preference, the clamping device v,terminates at its vinner end in a kthreaded stud I18 on which may be threaded an adjusting nut 19. kA portion of the out-sidey surface ofthe adjusting nut.y is t preferably exposed at rthetop and bottom of the handle as shown, `in order to provide for easy access to the nut 19 when securing the handle and abrush head together.

described' brush handle and clamping device, are thought to be apparent from the above detailed description of parts. It will be seen -thatthe adjusting nut 19 is located with rel The `advantages and manner of use ofthe Y rearwardly. It will be seen that the inner surface of the portions 8 and 9, will constitute a slidable bearing surface for either forward or rearward movement of the element 10.

The flared outer end 9 of member 6 serves to govern the clamping action of the spring arms land 17. The inherent resiliency of these members serves to release them from about the brush head as soon as clam ing dem "vi'celO is movedorward'a sufficientl istance.

The adjusting nut V19 is positioned longitudinally by contact of the ends thereof with the ends of the elongated opening 7 as Iwillbe obviousrom the drawing.

As the brush is secured to the handle solely irictional vengagement `with` the handle clamping' member, it will bey notedthat-the described construction foi thefhandle'and the clamp permits the brush' to bev readily turned 20 and adjusted to various positions without op- 'eratingthef adjusting nut. v

'The brush Y'handle and yclanip f'may be formed V'entirely of such 'metal as German silver or monel metal, sothat the entire-brush may be sterilizedv by: boiling without damage,

' corrosion" 'or discoloration.

' Itappears to be' 'accepted by thedental `profession' that the teeth should be cleansed in 3a vertical direction toward and away from the gums, and byy prvidin'g a han'dlewhichpermits the yu'se vof a'comparatively small`angu larly adjustable, brush that 'may be instantly adjusted Aat various angles vwith the handle, a brush assembly is p'rovided-whichwill facilitate brushing the teeth in the' described manner. l

I claim as my'invention: Y In ya holding device, adapted for use with a toothbrush having a stud for detachable en- 40 gagement by said device, a tubular outer end portion,the inner endy of the tubular portion opening into a nutreceiving aperture, ya handle, a sleeve formed by said tubular portion and extending beyond said aperture, said fk5 sleeve being crimped about a portion of the handle for securement of the handle to'said tubular portion, a stud clamping member having a stud-receiving opening in its outer end, and al rearwardly extending slot leading from said opening and adapted to engage in said tubular outer portion, whereby the sizeV of the stud opening may be decreased in diameter, athreaded stud formed on the inner end of said clamping member, and a nut disposed 50 in the aperture of the tubular portion and engaging said threaded stud. j j

ROBERT R. 'MYERS 

